Lifting implement



Patented Feb. 24, 1925.

UNITED STATES,

PATENT OFFICE.

JOSEPH A. FALK, F BROOKLYN, YORK, ASSIGNORTO AMERICAN MACHINE 8c FOUNDRY COMPANY, A. CORPORATION OF NEW JERSEY.

LIFTING IMPLEMENT.

moved about on a floor, a crowbar, or other a bar, is placed under solne part of the machine above the floor with one of its ends resting on the floor, the bar being used as a lever with the floor as a fulcrum. Sometimes a block of wood or a metal plate is placed onthe floor under the lower end of the bar, but more frequently this is omitted. As a result of this practice, floors are marred, sometimes badly, when the bars slips as it frequently does. The main object of the present invention is to provide a self-contained lifting device which will be free from the defects of the ordinary bar commonly used. With this and other objects not specifically mentioned, the invention consists in certain constructions which will be hereinafter fully described and then specifically pointed out in the claims hereunto appended.

In the accompanying drawings, which form a part of this specification and in which like characters of reference indicate the same or like parts, Fig. 1 is a perspective view of a lifting implement constructed in accordance with the invention; and Fig. 2 is an enlarged sectional view of one end of the implement shown in Fig. 1.

In carrying the invention into elfect, there is provided a lifting implement comprising a bar having a ball at one end, a block hav ing a flat bearing surface adapted to rest on the floor and also having a semi-spherical concavity for forming a seat for the ball, and means for holding the ball in said concavity so that the block is permanently attached to the bar, cannot be lost, and the bar will not be used without it. In the best constructions, the bar is composed of a pipe pinned to a shank in one end thereof and integral with the ball. And in the best constructions also, the edge of the concavity surface, so that the bar, when used as a lever, can be swung from a horizontal to a vertlcal position and moved a considerable distance to the right or left.

' Referring to the drawings, which illustrate one embodiment of the invention, 3 indicates a metallic pipe of 1 commercial character, in one end of which is fitted a shank 4, said shank being secured to the pipe by means of a taper pin 5 driven through both pipe and shank. The shank 4 is formed integral with a ball 6 at the extreme end of the bar which includes the pipe 3, the shank 4 and the ball 6.

There is further provided a metallic block 7 having a flat bearing surface 8 adapted to rest on the floor and also having a semi-spherical concavity 9, the edge 10 of which lies in a plane at an angle of forty-five degrees from the plane of the flat bearing surface 8.

The ball is held or contained in the con cavity 9 by means of an annular ring 11 secured to the block 7 by means of screws 12.

In the operation of the device, the block 7 is positioned under the machine or other heavy object to be moved, with its flat hearing surface 8 resting on the floor. The operator then uses the bar as a lever, lifting its free end and then moving it to the right '01.- left as the occasion requires. When the machine has been moved as far as convenient, the bar is then lowered and repositioned, and again operated to move the machine a little farther. The ball being permanently held in its seat in the block 7, the latter cannot be lost and the large area of its fiat bearing surface prevents marring of a floor, even in the event of slippage.

Changes and variations within the scope of the claims may be made in the structure by means of which the invention is carried into efiect. The invention therefore is not to be restricted to the precise details of the structure shown and described.

What is claimed is:

1. A lifting implement comprising a bar having a ball at one end, a block having a flat bearing surface and also a semi-spherical concavity forming a seat for said ball, and means for holding said ball in said concavity in such manner as to permit a universal movement of said bar between a position parallel with said surface and a position at right angles thereto.

2. A lifting implement comprising a bar having a ball at one end, a block having a flat bearing surface and also a semi-spherical concavity forming a seat for said ball, and means for holding said ball in said con cavity in such manner as to permit a uni versal movement of said bar between a position parallel with said surface and a position at right angles thereto, said bar being composed of a pipe pinned to a shank in Ignel end of said pipe and integral with said 3. A lifting implement comprising a bar having a ball at one end, a block having a flat bearing surface and also a semi-sphefcal concavity forming a seat for said ball, and means for holding said ball in said concavity, the edge of said concavity lying in a plane at an angle of forty-five degrees from the plane of said flat bearing surface.

4. A lifting implement comprising a bar having a ball at one end, a block having a flat bearing surface and also a se1ni-spherical concavity forming a seat for said ball, and means for holding said ball in said concavity in such manner as to permit a universal movement of said bar between a position parallel with said surface and a position at right angles thereto, said means being composed of an annular ring screwed to said block.

5. A lifting implement comprising a bar having a ball at one end, a block having a flat bearing surface and also a semi-spherical concavity forming a seat for said ball, and means for holding said ball in said concavity, said bar being composed of a pipe pinned to a shank in one end of said pipe and integral with said ball, the edge of said concavity lying in a plane at an angle of forty-five degrees from the plane of said flat bearing surface, and said means being composed of an annular ring screwed to said block.

In testimony whereof, I have signed my name to this specification.

JOSEPH A. FALK. 

